Oven-thermometer.



M. M. BENZEGER.

OVEN THERMOMETER.

APPLICATION FILED JULY 2.191s.

1,326,386; Patented Dec. 30,1919.

UNITED STATES PATENT OFFICE.

MARTHA IVE. BENZIG-ER, OF BROOKLYN, NEW YORK.

OVEN-THERMOMETER.

Application filed. July 2, 1918.

To all whom it may concern:

Be it known that I, 'MARTHA M. BEN- ZIGER, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Oven- Thermometers, of which the following is a specification.

My invention relates to an oven thermometer and the principal aim is to provide an article of this kind of a portable type so that it may be used in connection with any make or size of stove oven to indicate the temperature thereof at all times, and thus materially asssist the cook, especially when other matters require her attention and she cannot watch the contents of the oven con: stantly.

Another object is to provide the particular and advantageous construction which is hereinafter described and claimed, reference being had to the accompanying drawings.

in said drawings, but one preferred embodiment has been illustrated and therein Figure 1 is a front elevation of my improved oven thermometer;

Fig. 2 is a rear elevation of my improved oven thermometer;

Fig. 3 is a side elevation of my improved oven thermometer;

Fig. 4: is a cross sectional View on the line -14 of Fig. 3;

Fig. 5 is a cross sectional View on the line 5-5 of Fig. 2;

Fig. 6 is a fragmentary detailed view illustrating the method of connecting the thermometer casing to its support; and

Fig. 7 is a horizontal section through a modified form of thermometer support.

Referring specifically to the drawings, the thermometer support comprises a front wall 8, a rear wall 9, an intermediate wall 10, and connecting bars 11 and 12. Walls 8 and 9, which may be disposed at an acute angle to each other, as shown in Figs. 3 and 5, are separated by the intermediate wall 10, which intermediate wall is shaped according to the marginal contour of the walls 8 and 9. Said walls 8 and 9 are not soldered to wall 10, inasmuch as the heat would dissolve the solder, but on the other hand are clamped, as will be later explained, against the edges of said wall 10. Wall 10 may be a'single strip of bendable metal. This strip or wall has suitable slots 13 and 14 provided therethrough, through and beyond which lugs 15 and 16,

Specification of Letters Patent.

1 Patented Dec. 30, 1919.

Serial No. 242,981.

respectively, of less width than bars 11 and 12, pass. These lugs after passing through the slots, are bent against the wall 10, being removably bolted or fastened thereto as at 17 and 18, when desired.

Centrally of the bar 12, a depending U- shaped hanger or support 19, integral with the remainder of the bar, is provided.

The-thermometer employed may be of any desired type but preferably has an an nular dial or indicating disk 20 to which the casing 21, preferably substantially elliptical in cross section is attached by soldering or otherwise. This casing extends rearwardly from the dial and rests in the hanger 19 as shown in t and 5. It will be realized that casing 21 passses through an opening of its shape in the wall 9, and the dial or disk 20 projects through a circular opening in wall 8 and beyond the outer surface of wall 8. The projecting portion of the disk has screw threads 21 on its periphery which are engaged by those of a clamping ring 22 whereby the latter secures the thermometer rigidly to the wall 8. Said casing is flush with the outer surface of the rear wall 9. Said wall 9 is cut away as at 23 to provide openings through which the heat may pass to the thermometer, and for the second purpose of providing material bendable into lugs 24 to bear against the rear of the casing, and be secured thereto, if desired, as by means of screws 25, and lugs 2% extending inwardly and bearing a ainst the sides of the casing.

It will thus be seen that the ring 22 and screws 25, will secure the thermometer and front and rear walls 8 and 9, together, and that by supporting the thermometer casing from the hanger 19, a rigid structure is produced.

On the face of the dial 20, suitable indications may be provided for the guidance of the cook, and cooperating with these indications is a pointer or indicator 26, rigidly connected to a spindle 27. ()n the side of the dial opposite to the indicator, a pinion 28 is keyed to the spindle 27. Cooperating with the teeth of the pinion 28, are the teeth of a suitable rack 29, held in operative relation with the pinion by means of a lug 30, bent inwardly from the casing. The rack bar, is preferably made as a heat sensitive metallic structure, in order to extend and contract according to its temperature, and in so doing, rotate the shaft 29 and indicator 26, by the engagement of the rack teeth with those of the pinion. This bar 29 may be secured in place in any suitable manner as by means of a rivet 31, securing it to the thermometer casing.

In order that the heat may pass through the device to the heat-sensitive element suitable openings may be provided at 32, 33 and 34, respectively in the wall 9, hanger 19 and casing 21.

In some instances, it may be desired to provide a seam between the marginal edge of the walls 8 and 9 and the edges of the intermediate wall 10. A modification to carry out this desire is shown in Fig. 7. In this figure, the walls 8 and 9 and wall 10, are brought into overlapping relation and then seamed or clenched together as at 35.

It will be understood, that the device, since it is portable, may be placed within any oven, and that according to the temperature, the indicator 26 will be moved relative to the different indications on the dial 20, to guide the cook.

Since merely one preferred embodiment of the invention has been illustrated and described, it is to be understood that changes in the details may be resorted to without departing from its spirit and scope.

I claim:

1. A thermometer device having front and rear walls, an intermediate Wall spacing said walls apart, a bracing bar for the intermediate Wall, a thermometer, means securing the thermometer rigid with the front and rear walls, and a means on the bar supporting the thermometer.

2. A thermometer device having front and rear walls, a thermometer rigid with said walls, a spacing wall intermediate the said walls, and bracing means for the spacing wall cooperating with the thermometer to support the same.

3. A thermometer device having a thermometer and a front wall, means to secure said thermometer to the front wall, a rear wall, said rear wall having an opening for the rear end of the thermometer and being cut away to provide a heat entrance opening and a lug, and said lug operlapping said rear end of the thermometer.

4. A thermometer device having a front wall, a thermometer extending from said wall, a rear wall having an opening, said thermometer snugly extending into said opening, said rear wall having a lug overlapping said thermometer.

5. A thermometer device having front and rear walls, a spacing Wall intermediate said walls, bracing means for the spacing wall having a hanger, a thermometer mounted in said hanger and a means cooperating with the thermometer to secure the front and rear walls in rigid relation therewith.

6. A thermometer device having front and rear walls, an intermediate spacing wall, a bracing bar for the intermediate wall having a hanger, a thermometer mounted in said hanger, said thermometer bearing against the inner surface of the front wall and having a portion extending through said wall, fastening means engaging said portion to rigidly connect the thermometer with the front wall, the. rear wall having an opening. said thermometer snugly fitting into said opening, and means fastening the thermometer to the rear wall.

7 A thermometer device having a front wall and a rear wall, an intermediate wall spacing said two first-named walls apart, a bar having end lugs of less width than the bod of the bar, said lugs extending through the spacing wall and being bent against the exterior face of said'wall, said bar having a hanger, a thermometer supported by said hanger, the front wall having an opening therein, said thermometer engaging the inner face of the front wall and having a portion extending through said opening and provided with screw threads, a clamping ring engaging said screw threads, the rear wall having an opening, said thermometer being snugly disposed in said opening, and said rear wall being cut to provide heat-entrance openings, and lugs, said lugs being bent against the thermometer.

8. A thermometer device having a front wall and a rear wall, an intermediate wall spacing said two first-named walls apart, a bar having end lugs ofless width than the body of the bar, said lugs extending through the spacing wall and being bent against the exterior face of said wall, said bar having a hanger, a thermometer supported by said hanger, the front wall having an opening therein, said thermometer engaging the inner face of the front wall and having a portion extending through said opening and provided with screw threads, a clamping ring engaging said screw threads, the rear wall having an opening, said thermometer being snugly disposed in said opening, and said rear wall being cut to provide heat-entrance openings, and lugs, said lugs being bent against the thermometer, said thermometer having a t'urnable indicator, a pinion associated with said indicator, a heat-responsive rack bar having teeth meshing with those of the pinion, and a lug extending inwardly from the thermometer adjacent the rack bar to insure mesh of its teeth with those of the pinion.

In testimony whereof I have affixed my signature in the presence of two witnesses.

DORA Wnrr, ELIZABETH GROSSMANN. 

